1-Ethynyl-3-(trifluoromethyl)benzene
Also known as: 3-Ethynylbenzotrifluoride, 3-(Trifluoromethyl)phenylacetylene, 3-Ethynyl-alpha,alpha,alpha-trifluorotoluene, 3-Ethynyltrifluorotoluene, Benzene, 1-ethynyl-3-(trifluoromethyl)-
1-Ethynyl-3-(trifluoromethyl)benzene (CAS 705-28-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H5F3 and a molecular weight of 170.131 g/mol. Key properties include a boiling point of 162.9±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 44.6±15.3 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 705-28-2
- Jingsj CID
- J-26036-6
- Molecular Formula
- C9H5F3
- Molecular Weight
- 170.131 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 162.9±40.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 44.6±15.3 °C |
| Exact Mass | 170.034332 |
| LogP | 2.97 |
| Vapor Pressure | 2.8±0.3 mmHg at 25°C |
| Refractive Index | 1.467 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Ethynyl-3-(trifluoromethyl)benzene?
The CAS number of 1-Ethynyl-3-(trifluoromethyl)benzene is 705-28-2.
What are the molecular formula and molecular weight of 1-Ethynyl-3-(trifluoromethyl)benzene?
1-Ethynyl-3-(trifluoromethyl)benzene has molecular formula C9H5F3 and molecular weight 170.131 g/mol.
Is 1-Ethynyl-3-(trifluoromethyl)benzene hazardous?
1-Ethynyl-3-(trifluoromethyl)benzene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Ethynyl-3-(trifluoromethyl)benzene (CAS 705-28-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26036-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.